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Ticket 20210917_1

Ticket Number: 20210917_1Ticket State: CLOSED
Ticket Opened: 2021-09-17 11:18Ticket Closed: 2021-09-21 08:55
Ticket Description: Fiber cut between Visp and Locarno

Problem Description:

Suspected fiber cut between Visp and Locarno.
All traffic is routed over backup paths.

Note there is still a third backup path, but only at reduced capacity of 10G.


From 2021-09-17 11:01 until undefined
Impact: no more redundancy
Service: P2P/OPN
Sites: CSCS-PRACE, ETHZ-CSCS-zh1-lg3

From 2021-09-17 11:01 until undefined
Impact: no more redundancy
Service: network access


2021-09-21 08:55
Chain of events leading to the deactivation of our active fiber route have been understood. Measures will been taken to prevent similar incidents in future. Closing ticket.

2021-09-20 10:37
Link restored after re-plugging line fibers in Locarno. Why the fibers have been pulled out is not known at this moment.

2021-09-19 15:19
Sunrise reports that no fiber break was found by their measurement team. They suspect a problem in Locarno. A detailed analysis will be provided on Monday.

2021-09-17 14:22
Sunrise has dispatched a support team to Brig in order to locate the break.

2021-09-17 13:45
checked with SBB about know problem on their side (none)

2021-09-17 11:15
informed Sunrise Helpdesk about problem

All times are in local Swiss time CET / CEST.
For all questions about this ticket, please send mail to noc@switch.ch
or call +41 44 268 15 30.